K2 Quick Reference Card

Courtesy Van Brollini - NS6N

 

K2 Quick Reference Card

Display Filter # & BW: Press Xfil + AGC

AGC ON/OFF:

Press PRE/ATT + AGC

Top Label=Tap

Bottom Label=Hold second

Restore factory default: (RESET ALL K2 FUNCTIONS)

Turn off K2, hold 4,5,6 and turn back on.

Display: Volts / Amps

Play/Rec Keyer:

Press MSG; Press 0-9

Direct Frequency Entry:

Hold BAND+ + BAND-, Enter 4 or 5 digits

Auto repeat: Tap MSG, Hold 0-8

Set Power to 3 watts or less, before using ATU

PTT/SPEECH:

Hold VOX ("L" or "U" flashes when in SSB VOX mode)

Scan - Setup (single-band scan only) Store VFOA (lower) & VFOB (upper) for band edges of interest. Select operating mode: preamp / attenuator, tuning

rate. Press STORE; Press 0-9

Lock: decimal flashes

Test/Operate:

Hold VOX, CW mode C flashes

Scan (initiate):

Hold 0-9 when STORE or RCL a Memory.

Split frequency:

A or B flashes when on

Hold LEVEL once to set noise blanker threshold Low,

Hold LEVEL again to set noise blanker threshold High

RIT / XIT: 2 RIT/XIT Ranges +/- 0.6,

+/-1.2 KHz. flashes when RIT2 on

Tap NB once to turn on nb1, Tap NB again to turn on nb2, Tap NB again to turn off noise blanker

 

 

Set BFO/FIL: FCTR in TP2, Band between 160-17M, Select CW, CAL FIL, Hold Edit. Band+=BW,

Band-=BFO. Use Display to see BFO frequencies and set as in table below; Xfil / Mode to switch.

[*BF1t: "t" = SSB TX BFO. Change with caution.]

Linearize VCO: FCTR in TP1. Select VFO frequency, CAL PLL, Hold edit. 1800.1, 3500.1, 7000.1, 10000.1, 14000.1, 18000.1, 21000.1, 24800.1, 28000.1

S LO: RF Gain CW, turn VFO Knob CW until left segment turns off. About 180.

Program PF1/PF2: Most useful PF1/PF2 settings: RIT, ATU, SCAN, SSBC.

S HI: RF gain CCW, turn VFO Knob CCW unit right segment just turns on. About 22

Peak bandpass max signal, then power out: (in order) 80: L3/L4; 40: L1/L2;

30: L8/L9; 20: C21/C23; 17: C32/C34;

10; L12/L13, 12: C44/C46

Power Save: LCD Day, Grph off, Opt Battery, Preamp off, Use headphones

Frequency calibration: FCTR and external counter on TP1, select 28 MHz, match counters using CTRL-C22. [You must re-run CAL PLL (on all bands) and CAL FIL (tweak all BFOs) before you'll get any benefit out of the C22 change! ]

VCO Align: Frequency set to 4000.1, DMM to left side of R30). Adjust L30 for 6.0 Volts

 

Mode

FL1

BF1t *

FL2

BF2

FL3

BF3

FL4

BF4

CW/REV (4913.6/16) = (4913.6/4916.0)

OP1

4913.6/16.0

0.7

4913.1/14.3

0.4

4913.1/14.3

0.1

4913.0/14.2

LSB/USB (4913.5/16.2) = (4913.6/4916.2)

OP1

4913.5/16.2

OP1

4913.5/16.1

1.8

4913.0/15.5

0.7

4912.7/14.7

 

MENU COMMANDS

Select with main knob, BAND+ or BAND-,

Hold EDIT to change:

ST L / ST P: Set Side Tone [L]evel / [P]itch

t-r: QSK delay. 0.02 Default

rPt: CW message Repeat intrvl

iAb: iambic A or B

inP: Paddle hand, normal, reverse

LCd: night-backlight on, day off

GrPH: dOt, bAr, OFF

CAL: Off, FCtr, FIL, PLL, CUR, S LO, S HI

PF1/2: Select User-programmed Function PF1/2

SSbA: Audio, SSbC: Speech

Compressor

rAnt: Aux Rec Ant switch OFF, ON

per Band

OPt: Perf, Battery

ATU: Automatic Tuning Unit

L0-L8 / C0-C8: Test individual ATU element

CALn: Used for calibration of C55 (null). L/C set to 0; network set to Cin.

AUTO: Normal auto-tune; use with most antennas

POUT: Forward/Reverse power display

CALP: Used for calibration of R1. L/C set to 0; network set to Cin.

ALT: Alternate auto-tune; use with short whips, etc. (much longer tune times)

CALS: Used to check SWR calibration. L/C set to 0; network set to Cin.

Lxx.x / Cx.xx: Ind(uH)/Cap(nF) in use***

x.x-1: SWR from most recent tune-up***

INFO CODES: 010 Battery Voltage too low, 80 IOC Problem, 81 AuxBus Problem, 90/91 EEPROM write test failed, 201 EEPROM initialized, 230 BFO not connected to Freq Cntr, 231 VCO not connected to Frequency Counter, 235 PLL Ref Oscillator range error,

***(stored per-antenna, per-band)

 

 

BAND LISTING (Band, Band Segments, QRP Calling Frequencies-Novice, Europe, PSK31)

 

 

 

CW

 

 

 

 

 

SSB

 

160

1.8

 

1.81

 

1.838

 

 

1.843

1.91

2.0

80/75

3.5

3.56

3.579

3.58

3.71

3.75

 

3.69

3.985

4.0

40

7.0

7.035

7.04

7.080

7.035

7.03

7.06

7.110

7.112

7.15

 

7.09

7.285

7.3

30

10.1

 

10.106

 

10.116

 

 

10.140

 

10.15

20

14.0

14.06

 

 

14.070

14.15

 

 

14.285

14.35

17

18.068

 

18.096

 

18.100

18.11

 

 

18.13

18.168

15

21.0

21.06

21.110

 

21.080

21.2

 

21.285

21.385

21.45

12

24.89

 

24.906

 

24.920

24.93

 

 

24.95

24.990

10

28.0

28.06

28.110

 

28.120

28.3

28.36

28.385

28.885

29.7

K2

 

 

 

 

 

 

 

 

28.715

 

    

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